| | |
| GSM-fähige Netze im Ausland |
| Land | Betreiber | Weltzone |
| Afghanistan | Afghan Wireless, TDCA | 4 |
| Ägypten | Etisalat Misr, MobiNil, Vodafone | 4 |
| Albanien | AMC, Vodafone | 3 |
| Algerien | Djezzy (Orascom) | 4 |
| Amerikanische Jungferninseln | AT&T | 4 |
| Andorra | STA | 2 |
| Anguilla | Digicel | 4 |
| Antigua + Barbuda | Digicel | 4 |
| Antillen (Netherlands) | Curacao Telecom | 4 |
| Äquatorialguinea | Orange | 4 |
| Argentinien | CTI Movil, Personal, Telefonica Moviles | 4 |
| Armenien | Armentel | 4 |
| Aruba | Digicel | 4 |
| Aserbaidschan | Azercell, Bakcell | 4 |
| Australien | Vodafone Hutchison (H3G), Optus, Telstra, Vodafone | 4 |
| Bahrein | Batelco | 4 |
| Bangladesch | AKTEL, GrameenPhone | 4 |
| Barbados | Digicel | 4 |
| Belgien | Proximus Belgacom, Mobistar, BASE | 1 |
| Belize | BTL | 4 |
| Bermuda | Digicel, M3 Wireless | 4 |
| Bolivien | Entel Movil, Nuevatel | 4 |
| Bosnien-Herzegowina | BH Telecom, RS Telecommunications, PE Croatian Telecom | 3 |
| Botwana | Orange | 4 |
| Brasilien | Amazonia Cellular, TNL Oi, TIM, VIVO, Claro | 4 |
| Brunei | DST Comm. | 4 |
| Bulgarien | MobilTel, Globul | 1 |
| Burkina Faso | Celtel Burkina Faso | 4 |
| Chile | Entel PCS, Telefonica Moviles | 4 |
| China | China Mobile, China Unicom | 4 |
| Costa Rica | ICE | 4 |
| Dänemark | H3G, TDC Mobil, Telia, Telenor | 1 |
| Dominica | Digicel | 4 |
| Dominikanische Republik | Orange, Trilogy VIVA | 4 |
| Ecuador | Conecel, Telefonica Moviles | 4 |
| Elfenbeinküste | MTN, Orange | 4 |
| El Salvador | CTE Telecom Personal "Claro", Telemovil, Telefonica Moviles | 4 |
| Estland | Elisa, Tele2, EMT | 1 |
| Färöer Inseln | Faroese Telecom, Vodafone | 3 |
| Fidschi | Vodafone Fiji | 4 |
| Finnland | AMT Alands, DNA, Elisa, TeliaSonera | 1 |
| Frankreich | Orange, SFR, Bouygues | 1 |
| Französisch Westindien | Digicel, Orange Caraibe | 1 |
| Gabun | Celtel, Libertis | 4 |
| Gambia | Africell | 4 |
| Georgien | Geocell, Magticom | 4 |
| Ghana | Gibtelecom | 4 |
| Gibraltar | Scancom, Millicom | 1 |
| Grenada | Digicel | 4 |
| Griechenland | Cosmote, Wind Hellas, Vodafone | 1 |
| Großbritannien | H3G, Telefonica UK, Orange, T-Mobile, Vodafone | 1 |
| Guatemala | Comcel, Telefonica Moviles | 4 |
| Haiti | Digicel Carribbean | 4 |
| Honduras | Celtel | 4 |
| Hong Kong | China Mobile, CSL, Hutchison, PCCW, SmarTone | 4 |
| Ile de la Réunion | Orange Réunion | 1 |
| Indien | Aircel Limited, Bharti, Loop Mobile (BPL), BSNL, Vodafone Essar | 4 |
| Indonesien | Excelcom, Telkomsel, Indosat | 4 |
| Irak | Asia Cell Telecomminications Company | 4 |
| Iran | MCI | 4 |
| Irland | H3G, Meteor, Telefonica Ireland, Vodafone | 1 |
| Island | Siminn, Vodafone | 1 |
| Isle of Man | Manx Telecom | 2 |
| Israel | Cellcom, Orange | 4 |
| Italien | H3G, TIM, Vodafone, Wind | 1 |
| Jamaica | Digicel | 4 |
| Japan | NTT DoCoMo, SOFTBANK | 4 |
| Jemen | SabaFon | 4 |
| Jordan | Fastlink, Orange | 4 |
| Kaimaninseln | Digicel, Cable & Wireless | 4 |
| Kambodscha | Mfone | 4 |
| Kamerun | MTN | 4 |
| Kanada | Rogers Wireless | 3 |
| Kanalinseln | Cable & Wireless Guernsey, Jersey Telecom | 2 |
| Kap Verde | CV Movel | 4 |
| Kasachstan | K'Cell | 4 |
| Katar | Q-Tel | 4 |
| Kenia | Safaricom, Celtel | 4 |
| Kirgistan | Sky Mobile | 4 |
| Kolumbien | Comcel, Colombia Movil, Telefonica Moviles | 4 |
| Kosovo | Monaco Telecom | 3 |
| Kroatien | Tele2, VIP-NET, Croatian Telecom | 2 |
| Kuba | Cubacel | 4 |
| Kuweit | MTC - Vodafone, Wataniya | 4 |
| Laos | Millicom | 4 |
| Lesoto | Econet Ezi-Cel | 4 |
| Lettland | Tele2, LMT | 1 |
| Libanon | MTC, MIC1 | 4 |
| Liberia | Cellcom | 4 |
| Libyen | Al Madar | 4 |
| Liechtenstein | Orange, TANGO Tele2, Mobilkom, Telecom FL | 1 |
| Litauen | UAB Bite, Omnitel | 1 |
| Luxemburg | P&T, Tele2, Orange | 1 |
| Macau | CTM, Hutchison Telecom | 4 |
| Madagaskar | Celtel | 4 |
| Malawi | Celtel | 4 |
| Malaysia | Celcom Axiata, Berhad, Digi Telecom, Malaysian Mobile Services (Maxis) | 4 |
| Malediven | Dhiraagu, Wataniya | 4 |
| Mali | Malitel | 4 |
| Malta | Vodafone, go mobile | 1 |
| Marokko | IAM, Médi Telecom | 4 |
| Mauretanien | MATTEL | 4 |
| Mauritius | Emtel, Telecom "Orange" | 4 |
| Mazedonien | One, T-Mobile | 3 |
| Mexiko | Telcel, Telefonica | 4 |
| Moldawien | MOLDCELL, Orange | 3 |
| Monaco | Orange, SFR, Bouygues Telecom | 1 |
| Mongolei | MobiCom | 4 |
| Montenegro | Crnogorski Telekom, Promonte | 3 |
| Mozambique | Mozambique Cellular | 4 |
| Namibia | MTC | 4 |
| Nepal | NTC Mobile | 4 |
| Neuseeland | Vodafone, Two Degrees | 4 |
| Nicaragua | Telefonica Moviles | 4 |
| Niederlande | Vodafone, KPN, T-Mobile | 1 |
| Niger | Celtel | 4 |
| Nigeria | Zain | 4 |
| Norwegen | Telenor Norge, NetCom, Network Norway | 1 |
| Oman | Oman Mobile, Nawras | 4 |
| Österreich | H3G, Mobilkom, Orange, T-Mobile | 1 |
| Pakistan | Mobilink, PTML, Telenor, WARID | 4 |
| Palästina | Palestine Cellular (JAWWAL) | 4 |
| Panama | Telefonica Moviles, Cable & Wireless | 4 |
| Paraguay | Telecel, Hola Paraguay, Nucleo | 4 |
| Peru | América Móvil - CLARO, Telefonica Moviles | 4 |
| Philippinen | Globe Telecom, SMART Communications | 4 |
| Polen | Polkomtel, ERA Polska | 1 |
| Portugal | Sonaecom, Vodafone (Telecel), TMN | 1 |
| Puerto Rico | AT&T, Cingular Genesis | 3 |
| Ruanda | MTN | 4 |
| Rumänien | Vodafone, Orange, Cosmote | 1 |
| Russland | Uralsvyazinform, Vimpelcom , MTS, NCC, NTC, Uralsvyazinform, Smarts | 4 |
| Samoa | Digicel | 4 |
| San Marino | TIM, Vodafone Omnitel, Wind | 1 |
| Saudi Arabien | Saudi Arabia Telecom, Etihad Etisalat | 4 |
| Schweden | H3G, Tele2, Telenor, TeliaSonera | 1 |
| Schweiz | Swisscom, Sunrise, Orange | 2 |
| Senegal | Sonatel, Sentel | 4 |
| Serbien | Telenor, Telekom Srbija | 3 |
| Seychellen | Telecom | 4 |
| Simbabwe | Econet Wireless | 4 |
| Singapur | SingTel, MobileOne, StarHub | 4 |
| Slowakei | Orange Slovensko, Telefonica Slovakia, T-Mobile | 1 |
| Slowenien | Mobitel, SI Mobil | 1 |
| Spanien | Orange, Telefonica España, Vodafone | 1 |
| Sri Lanka | Dialog Telekom, Tigo, Mobitel | 4 |
| St Lucia | Digicel | 4 |
| St Vincent & Grenadines | Digicel | 4 |
| St Kitts & Nevis | Digicel Caribbean | 4 |
| Sudan | Zain | 4 |
| Südafrika | MTN, Cell C, Vodacom | 4 |
| Südkorea | SK Telecom, KT Freetel | 4 |
| Syrien | Syriatel | 4 |
| Tadschikistan | Chunghwa, Far EasTone Taiwan Mobile | 4 |
| Taiwan | MIC, Zantel | 4 |
| Tansania | MegaFon | 4 |
| Thailand | DTAC, True Move, AIS | 4 |
| Togo | Togo Cellulaire | 4 |
| Trinidad & Tobago | TSTT, Digicel | 4 |
| Tschad | Zain - Celtel | 4 |
| Tschechien | T-Mobile, Vodafone, Telefónica Czech Republic | 1 |
| Türkei | Avea, Turkcell | 3 |
| Tunesien | Orascom Telecom, Tunesie Telecom | 4 |
| Turkmenistan | BCTI | 4 |
| Turks & Caicos | Digicel Carribbean | 4 |
| Uganda | MTN | 4 |
| Ukraine | Astelit, UMC, Golden Telecom, Kyivstar | 4 |
| Ungarn | Pannon, Magyar Telekom, Vodafone | 1 |
| Uruguay | Telefonica Moviles | 4 |
| USA | T-Mobile, AT&T, Cincinatti Bell, Sprint Nextel, Manx Telecom | 3 |
| Usbekistan | Ucell | 4 |
| Vatikan | TIM, Vodafone, Wind | 1 |
| Venezuela | Digitel, Telefonica | 4 |
| Vereinigte Arabische Emirate | Etisalat, du | 4 |
| Vietnam | VMS, Vinaphone | 4 |
| Weissrussland | Velcom (MDC) | 4 |
| Zypern | Areeba, Cytamobile-Vodafone | 1 |
| Stand: März 2010 |